diff options
Diffstat (limited to 'src/gallium/drivers/r600/r600_shader.c')
| -rw-r--r-- | src/gallium/drivers/r600/r600_shader.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c index c9c922fc02b..188fbc9d47d 100644 --- a/src/gallium/drivers/r600/r600_shader.c +++ b/src/gallium/drivers/r600/r600_shader.c @@ -4045,7 +4045,6 @@ static int tgsi_dfracexp(struct r600_shader_ctx *ctx) struct r600_bytecode_alu alu; unsigned write_mask = inst->Dst[0].Register.WriteMask; int i, j, r; - int firsti = write_mask == 0xc ? 2 : 0; for (i = 0; i <= 3; i++) { memset(&alu, 0, sizeof(struct r600_bytecode_alu)); @@ -4066,15 +4065,18 @@ static int tgsi_dfracexp(struct r600_shader_ctx *ctx) return r; } - /* MOV first two channels to writemask dst0 */ - for (i = 0; i <= 1; i++) { + /* Replicate significand result across channels. */ + for (i = 0; i <= 3; i++) { + if (!(write_mask & (1 << i))) + continue; + memset(&alu, 0, sizeof(struct r600_bytecode_alu)); alu.op = ALU_OP1_MOV; - alu.src[0].chan = i + 2; + alu.src[0].chan = (i & 1) + 2; alu.src[0].sel = ctx->temp_reg; - tgsi_dst(ctx, &inst->Dst[0], firsti + i, &alu.dst); - alu.dst.write = (inst->Dst[0].Register.WriteMask >> (firsti + i)) & 1; + tgsi_dst(ctx, &inst->Dst[0], i, &alu.dst); + alu.dst.write = 1; alu.last = 1; r = r600_bytecode_add_alu(ctx->bc, &alu); if (r) |